z/VM: CP Commands and Utilities Reference - z/VM - IBM

TRACE SVC/DIAGNOSE/MC
TRACE SVC/DIAGNOSE/MC
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TRace
Authorization
Purpose
Operands
Usage Notes
Responses
SVC
DIAGnose
MC
range
Privilege Class: G
SIM
NOSIM
1654 z/VM: CP Commands and Utilities Reference
options
Use TRACE SVC, TRACE DIAGNOSE, and TRACE MC to trace the following:
v Supervisor calls (SVC)
v DIAGNOSE instructions
v Monitor calls (MC).
Note: Tracing is limited to those instructions that cannot result in an operation or
privileged operation exception.
range
identifies a hexadecimal range of SVC numbers, DIAGNOSE codes, or monitor
call codes. A range may be specified as a single number or pair of numbers
separated by a period (.) or a hyphen (-). Wrap-around ranges are not allowed.
SIM
specifies normal simulation of instructions. If neither SIM nor NOSIM is
specified, SIM is assumed.
NOSIM
specifies suppression of instruction simulation. Program interrupts for guest
PER events are also suppressed. By using NOSIM and the CMD option, you
can define a CP command or set of CP commands to be processed in place of
the suppressed instruction. The PSW is left pointing to the next sequential
instruction.
options
For an explanation of the options, see “TRACE: Options” on page 1604.
1. SVC, DIAGNOSE, and MC instructions that cause an operation or privileged
operation exception are not displayed.
2. For usage information, see “Usage Notes” on page 1601.
For response information, see“TRACE: Command Responses” on page 1610.
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